(adsbygoogle = window.adsbygoogle || []).push({}); Hey,

Every Saturday, I have to go to this stupid tutor school, and I got a test tomorrow, fml, and it about SURDS.

Questions
A) Find the answer
1) Write 2.168 correct to 2 sig.fig
2) Write 2.168 correct to 3 sig.fig
3) Write 3.716 correct to 1 sig.fig
4) Write 0.0615 correct to 2 sig.fig
5) Write 3.716 correct to 1 dec pl.....
6) Write 3.716 correct to 2 dec pl....
7) Write 0.0895 correct to 2 dec pl...
Write 0.0895 correct to 3 dec pl....

B)
Write each of the following correct to 2 sig.fig
1) 12.7 2) 0.831 3) 10.5 4) 7.683 5) 21.56

c)
Convert each of the following calculator answers into decimal forms:
1) 1.5 -05
2) 9.72 08
3) 7.3 -04

D) Write each of the following as it would appear in scientific notation form on the calculator
1) 500 000 000 000
2) 0.0005
3) 217 000 000
4) 0.000102
5) 19557
6) 3789600
7) 0.00009
0.0167

That's it..... hard

A)
1. 2.2
2. 2.17
3. 4
4. 0.062
5. 3.7
6. 3.72
7. 0.09
8. 0.090

B)
1. 13
2. 0.83
3. 10
4. 7.7
5. 22

C) What is that notation? Are you subtracting? Could you explain it better?

D)
1. 5.0 * 10^11
2. 5.0 * 10^-4
3. 2.17 * 10^8
4. 1.02 * 10^-4
5. 1.9557 * 10^4
6. 3.7896 * 10^6
7. 9.0 * 10^-5
8. 1.67 * 10^-2

Shouldnt B)3) be 11? 10.5 rounds up.

Not in sig figs, no.

These are correct

I can give you an example, but I just don't understand it though,
1.5 07
= 1.5 x 10 (and a little 7)
= 15,000,000

And you see for D, after the *, is it 10 squared ^4? I don't get it? Is it possible you could write it down on paint or something? And I'll give you rep or vBux for it

The "^" symbol just means it's an exponent. For example 10^11 means You must login or register to view this content.. The "*" means multiplication.


The answers to part B are:

1. 0.000015
2. 972000000
3. 0.00073

Oh, so like 10 to the power of 11?

Yep. You're just multiplying the decimal by 10 to some power.